theory on Mersenne primes ?

[3.14159]

Originally Posted by science_man_88

basically I'm trying to use the sumdigit(p) to determine k values to check if that helps it should be useful in finding factors.

Factors? Of what?

[science_man_88]

Originally Posted by 3.14159

Factors? Of what?

the Mersenne numbers with prime exponents that aren't prime lol.

[3.14159]

Originally Posted by science_man_88

the Mersenne numbers with prime exponents that aren't prime lol.

2^(a*b) - 1 = (2^a-1) * (1 + 2^a + 2^2a + 2^3a + ... +2^(b-1)a)

There you go.

[science_man_88]

Originally Posted by 3.14159

2^(a*b) - 1 = (2^a-1) * (1 + 2^a + 2^2a + 2^3a + ... +2^(b-1)a)

There you go.

that tells me nothing that I want. for a prime exponent unless you use decimal a and b you get 2^p-1 = (2^1-1)*(2^p-1)

[science_man_88]

I find that the sum of digit squares for A095847 seems to join up with every other so far (I've tested until 5810550306096509) or be 1 ( only 1 that has fit this so far outside of the obvious 1)

[3.14159]

Originally Posted by science_man_88

that tells me nothing that I want. for a prime exponent unless you use decimal a and b you get 2^p-1 = (2^1-1)*(2^p-1)

Oh; Now I see what you wanted;

2^p -1 = (2kp+1) * ((2^p -1)/2kp+1))

There you go.

Originally Posted by science_man_88

I find that the sum of digit squares for A095847 seems to join up with every other so far (I've tested until 5810550306096509) or be 1 ( only 1 that has fit this so far outside of the obvious 1)

This is too vague. Provide a clear explanation, free of ambiguous terms, of what you are doing, which probably has nothing to do w/Mersenne numbers.

[science_man_88]

Originally Posted by 3.14159

Oh; Now I see what you wanted;

2^p -1 = (2kp+1) * ((2^p -1)/2kp+1))

There you go.



This is too vague. Provide a clear explanation, free of ambiguous terms, of what you are doing, which probably has nothing to do w/Mersenne numbers.

[3.14159]

Originally Posted by science_man_88

Okay; This does not explain anything. Please explain its purpose.

Originally Posted by 3.14159

This is too vague. Provide a clear explanation, free of ambiguous terms, of what you are doing.

[science_man_88]

Originally Posted by 3.14159

Okay; This does not explain anything. Please explain its purpose.

do the same thing for the other ones only one exception other than 1 in the list of non 0 terms that doesn't cross paths with another.

[3.14159]

Originally Posted by science_man_88

do the same thing for the other ones only one exception other than 1 in the list of non 0 terms that doesn't cross paths with another.

What "other ones"? What list? A095847?

[science_man_88]

Originally Posted by 3.14159

Okay; This does not explain anything. Please explain its purpose.

(20:31) gp > v=input()
[3,2,2]
%28 = [3, 2, 2]
(20:31) gp > sum(X=1,#v,v[X]^2)
%29 = 17
(20:32) gp >